Record every retry attempt outcome

internal/framework/pipeline/debug.go

@@ -401,6 +401,31 @@ func writeDebugAttempt(recorder DebugRecorder, attemptPath string, envelope debu
 	return writeDebugTimed(recorder, attemptPath+".json", debugEnvelopeWithLLMCalls(envelope, scope))
 }
 
+type attemptTerminalRecorder struct {
+	recorder DebugRecorder
+	path     string
+	label    string
+	scope    *debugLLMScope
+	envelope debugTimedEnvelope
+}
+
+func newAttemptTerminalRecorder(recorder DebugRecorder, attemptPath, label string, scope *debugLLMScope, envelope debugTimedEnvelope) attemptTerminalRecorder {
+	return attemptTerminalRecorder{recorder: recorder, path: attemptPath, label: label, scope: scope, envelope: envelope}
+}
+
+func (r attemptTerminalRecorder) record(payload any, terminalErr error) error {
+	envelope := r.envelope
+	envelope.Payload = payload
+	if terminalErr != nil {
+		envelope.Error = terminalErr.Error()
+	}
+	if err := writeDebugAttempt(r.recorder, r.path, envelope, r.scope); err != nil {
+		debugErr := fmt.Errorf("write %s attempt debug artifact: %w", r.label, err)
+		return errors.Join(terminalErr, debugErr)
+	}
+	return terminalErr
+}
+
 func debugContentEnvelope(content []byte, mediaType string, metadata map[string]any, warnings []contracts.Warning) debugBinaryEnvelope {
 	content = redactSecretBytes(content)
 	return debugBinaryEnvelope{